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Diffstat (limited to 'Documentation/accounting/cgroupstats.txt')
| -rw-r--r-- | Documentation/accounting/cgroupstats.txt | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/Documentation/accounting/cgroupstats.txt b/Documentation/accounting/cgroupstats.txt deleted file mode 100644 index d16a9849e60e..000000000000 --- a/Documentation/accounting/cgroupstats.txt +++ /dev/null @@ -1,27 +0,0 @@ -Control Groupstats is inspired by the discussion at -http://lkml.org/lkml/2007/4/11/187 and implements per cgroup statistics as -suggested by Andrew Morton in http://lkml.org/lkml/2007/4/11/263. - -Per cgroup statistics infrastructure re-uses code from the taskstats -interface. A new set of cgroup operations are registered with commands -and attributes specific to cgroups. It should be very easy to -extend per cgroup statistics, by adding members to the cgroupstats -structure. - -The current model for cgroupstats is a pull, a push model (to post -statistics on interesting events), should be very easy to add. Currently -user space requests for statistics by passing the cgroup path. -Statistics about the state of all the tasks in the cgroup is returned to -user space. - -NOTE: We currently rely on delay accounting for extracting information -about tasks blocked on I/O. If CONFIG_TASK_DELAY_ACCT is disabled, this -information will not be available. - -To extract cgroup statistics a utility very similar to getdelays.c -has been developed, the sample output of the utility is shown below - -~/balbir/cgroupstats # ./getdelays -C "/sys/fs/cgroup/a" -sleeping 1, blocked 0, running 1, stopped 0, uninterruptible 0 -~/balbir/cgroupstats # ./getdelays -C "/sys/fs/cgroup" -sleeping 155, blocked 0, running 1, stopped 0, uninterruptible 2 |